3. (adj)D, d the 4th letter of the Roman alphabet Synonyms: ergocalciferol, cholecalciferol, calciferol, fivehundred, vitamin D, viosterol Antonyms: ordinal
4. (adj)five hundred, 500, d denoting a quantity consisting of 500 items or units Synonyms: d, fivehundred Antonyms: ordinal